Real bt barcode scanner with differences between Expo Client and native app

Expo 35.0.0
Platform IOS

I updated an app developed with expo, because provisioning profile runs out of date.
The app is running on an iPad 6 with via blue tooth connected real barcode scanner as keyboard. The tests with the expo client app run without problems. But with the built version of the app the scanner writes incomplete and wrong strings in to the textfields. In the iOS app “notes” all scanned barcodes are correct.

I tested this issue at several devices (iPhone8, iPad5, iPad6) and IOS versions with same result.

Does anyone know what’s going on there?

Thanks,
Stephan

Edit: the previous version of the app (Expo v25.0.0) ran without problems.